CN-116399557-B - Periodic swing flow field simulation device and application method

Abstract

The invention provides a periodic swing flow field simulation device and a use method thereof, wherein the periodic swing flow field simulation device comprises a water tank and a flow field direction adjusting mechanism, a flow guide plate is arranged in the water tank, a flow passage channel is formed between the bottom of the flow guide plate and the bottom of the water tank, a test piece to be tested is arranged at the center of the bottom of the flow passage channel, the flow field direction adjusting mechanism is arranged corresponding to the left side and the right side of the flow guide plate to form a left water collecting cavity and a right water collecting cavity, the left water collecting cavity and the right water collecting cavity form a liquid level difference, and the water flow direction of the flow passage channel is changed.

Inventors

• GUO RONG
• MAO JIAQI
• WU JINJIA
• LI XIANHUA

Assignees

• 武汉理工大学

Dates

Publication Date

20260505

Application Date

20230411

Claims (6)

1. 1. A periodic swinging flow field simulation device is characterized by comprising a water tank and a flow field direction adjusting mechanism, wherein a flow guide plate is arranged in the water tank, a flow passage is formed between the bottom of the flow guide plate and the bottom of the water tank, a test piece to be tested is arranged at the center of the bottom of the flow passage, the flow field direction adjusting mechanism is arranged corresponding to the left side and the right side of the flow guide plate to form a left water collecting cavity and a right water collecting cavity, the left water collecting cavity and the right water collecting cavity form a liquid level difference to change the water flow direction of the flow passage, the flow field direction adjusting mechanism comprises a left tipping bucket, a right tipping bucket and a tipping bucket rotary driving piece, the left tipping bucket and the right tipping bucket are symmetrically arranged on the two sides of the flow guide plate, the bottom of the flow guide plate is hinged with the bottom of the water tank, and the tipping bucket rotary driving piece is respectively connected with the left tipping bucket and the right tipping bucket to push the left tipping bucket and the right tipping bucket to rotate around a hinge point.
2. 2. The periodic oscillation flow field simulation device according to claim 1, wherein the flow guide plate is of a U-shaped right-angle bent plate-shaped structure, and two side edges are coated with wear-resistant rubber.
3. 3. The periodic oscillation flow field simulation device according to claim 2, wherein supporting beams are arranged at positions, corresponding to two sides of the guide plate, of the top of the water tank, the supporting beams are connected with the top of the guide plate, and the tipping bucket rotation driving piece is arranged on the supporting beams.
4. 4. A periodic oscillation flow field simulation device according to claim 1 or 3, wherein the back surfaces of the left skip bucket and the right skip bucket are provided with crisscrossed reinforcing ribs.
5. 5. A periodic oscillating flow field simulation apparatus according to claim 3, wherein the rotary drive member is an electric push rod.
6. 6. The method for using the periodic oscillation flow field simulation device according to claim 5 is characterized by comprising the following steps: The flow guide plate is fixed in the water tank through the supporting beam, the test piece to be tested is arranged at the bottom center of the flow passage, the bottom ends of the left tipping bucket and the right tipping bucket are hinged and fixed at the bottom of the water tank, the top end of the test piece is connected with an electric push rod fixed on the supporting beam, the electric push rod controls the left tipping bucket and the right tipping bucket to rotate left and right around the bottom end of the test piece, when the right tipping bucket rotates right and falls down, the left liquid level of the water tank is higher than the right liquid level to generate a rightward flow field, when the right tipping bucket rotates left and falls down, the right liquid level of the water tank is higher than the left liquid level to generate a leftward flow field, and the water flow velocity of an experimental area in the middle of the water tank is accurately controlled by changing the left pressure difference of the water tank, so that the simulation of the periodic swinging flow field is realized.

Description

Periodic swing flow field simulation device and application method Technical Field The application relates to the technical field of hydrodynamic experimental equipment, in particular to a periodic swing flow field simulation device and a use method thereof. Background The marine engineering and coastal engineering structures can simultaneously suffer from the coupling action of sea wind, wave, ocean current and other loads, and the design, construction and safe operation of the structures have very complex scientific and technical problems. While computational software simulation can be relied upon, physical model testing is critical in calibrating numerical model parameters, verifying performance characteristics of numerical predictions, and providing physical evidence for new design concepts. At present, ocean engineering and coast engineering experiments mostly adopt a subsection and isolation simulation method, wherein wind tunnel experiments are carried out on an upper structure alone to obtain wind load, and experiments on a lower structure are carried out on a water tank or a water pool. The traditional wind tunnel laboratory, water tunnel laboratory or water tank experimental device can simulate the fixed flow field well, and when researching the influence of the wind and wave of the fixed water area on the riverbed and the dykes and dams, the traditional flow field simulation device is difficult to simulate the periodic swinging flow field generated by the waves in the fixed water area. Through retrieving, chinese patent CN204612895U, publication No. 2015 9, month 2 discloses a small-size flow field simulation basin, including the basin, be provided with right grid and left grid in the basin, two grids divide into intake chamber, laboratory and play hydroecium with the basin, link to each other through the pipeline between intake chamber and the play hydroecium, be provided with the water pump on the pipeline, promote the flow of the fluid in the basin through the water pump, the velocity of flow adjustable flow field of pump size, just so can carry out the experimental work under the different velocity of flow of relevant device in the flow field. However, the structure of this patent is complicated, and the flow rate must be regulated by a water pump. Disclosure of Invention The technical problem to be solved by the invention is to provide a periodic swing flow field simulation device and a use method thereof aiming at the existing problems, and the periodic swing flow field is simulated by the cooperation of left and right tipping buckets and guide plates. Embodiments of the present application are implemented as follows: The embodiment of the application provides a periodic swing flow field simulation device which is characterized by comprising a water tank and a flow field direction adjusting mechanism, wherein a guide plate is arranged in the water tank, a flow passage channel is formed between the bottom of the guide plate and the bottom of the water tank, a test piece to be tested is arranged at the center of the bottom of the flow passage channel, the flow field direction adjusting mechanism is arranged corresponding to the left side and the right side of the guide plate to form a left water collecting cavity and a right water collecting cavity, the left water collecting cavity and the right water collecting cavity form a liquid level difference, and the water flow direction of the flow passage channel is changed. In some optional embodiments, the flow field direction adjusting mechanism comprises a left tipping bucket, a right tipping bucket and a tipping bucket rotary driving part, the left tipping bucket and the right tipping bucket are symmetrically arranged on two sides of the guide plate, the bottom of the guide plate is hinged with the bottom of the water tank, and the tipping bucket rotary driving part is respectively connected with the left tipping bucket and the right tipping bucket and pushes the left tipping bucket and the right tipping bucket to rotate around a hinge point. In some alternative embodiments, the guide plate is of a U-shaped right-angle bent plate-shaped structure, and two sides of the guide plate are coated with wear-resistant rubber. In some optional embodiments, the top of the water tank is provided with a supporting beam corresponding to the two sides of the guide plate, the supporting beam is connected with the top of the guide plate, and the tipping bucket rotation driving piece is arranged on the supporting beam. In some alternative embodiments, the back surfaces of the left and right tipping buckets are provided with crisscrossed reinforcing ribs. In some alternative embodiments, the rotary drive of the skip is an electric push rod. The application method of the periodic swing flow field simulation device is characterized by comprising the following steps of: The flow guide plate is fixed in the water tank through the cross beam, the test piece to be tes